EXCLUSIVE: 'It was epic!' RHONY's Ramona Singer throws daughter Avery a lavish college graduation party for 150 people at her Hamptons estate

Ramona Singer pulled out all the stops on Sunday for her daughter Avery.

The Real Housewives Of New York City star threw a lavish party at her stunning Southampton, New York mansion to celebrate the 22-year-old star's graduation from the University Of Virginia in May.

'It was a truly wonderful party and we all had such a good time,' the blonde reality TV star told DailyMail.com. 'I am so proud of her for graduating from a top school. And she did so with flying colors. It was so special and it made her very happy. She deserved it.'

Party time! Ramona Singer pulled out all the stops on Sunday for her daughter Avery with a big party at her Hamptons, New York mansion

Girl power: The Real Housewives Of New York City star was celebrating the 22-year-old star's graduation from the University Of Virginia in May

She relied on good friend Kirk Basnight of Red Catering to throw the party

Watch What Happens Live host Andy Cohen was one of the 150 guests.

'This is the most major party I have thrown since my wedding!' Ramona told DailyMail.com.

The looker wed Mario Singer in 1992 but they split in 2015.

The setting was a spectacular as Ramona's sprawling mansion was the perfect location.

'I love this house for entertaining, this is where I chill out,' said the blonde reality TV icon.

There was a large swimming pool that was filled with white balls and candles. In the background was purple lighting.

Ramona looked lovely in a black cocktail dress with a floral print and a white collar. Black and white strappy heels showed off her toned and tanned legs.

Stunning: There was a large swimming pool that was filled with white balls and in the background was pink lighting

Another look: At one point the light looked blue and purple on the tents

A big bash: Singer said her daughter Avery called the event 'epic'

Watch What Happens Live host Andy Cohen was one of the 150 guests

The Bravo beauty wore her blonde hair down in soft waves.

Her daughter Avery was the belle of the ball in her sleeveless lavender dress with a cut-out in the front.

Gold platform wedge heels added glamor for the event.

'My daughter and I are very close and I wanted a big party for her,' Ramona told DailyMail.com.

'At first it was going to be about 60 people but then we realized when we mix her friends and mine that is not possible. So we changed the list to 150.'

She relied on good friend Kirk Basnight of Red Catering to throw the party.

'This was the first party at my home where I was completely relaxed,' Ramona said. 'Because Kirk did everything and I trust him.

'Kirk said over the summer, "Let me throw a party for Avery at my house, I will do everything." But then the party got too big. But he told me not to worry, he would do it all. And he did!'

A nice spread: 'This is the most major party I have thrown since my wedding!' Ramona told DailyMail.com. Here Avery is seen in front of the Hamptons home

She added: 'He did all of it, I mean all of it, from the tents to the lights to the food, it was incredible. I am so impressed. I am such a control freak that I usually don't let anyone throw my parties, I usually do the cooking and everything.